Well mechanism



Oct. 23, 1928., i.

G. 3.v Busi-:ONG

Filed Feb. :1.5, 192s @f u I L.

4l?rdcented l.

GROVER C. BUSHONG, OF VJ'IITTEER, CALIFORNIA.

W'ELL MECHANISM.

` Application filed February 15, 71926. Serial No. 88,259.

It is the object of this invention to provide extremely simplified but practical means tor preventing unscreiving of the lengths of a string of sucker rods which operates the pump of a Well, thD improved construction being readily adaptable to standard Well pumping mechanism Without replacing or altering the pump mechanism. I

It is a further object of trie invention to l0 provide a Construction forming both a tubing hleeder and a means for preventing unscreWing of the sucker rods.

The invention Wi l be readily understood from the following description of the accompanying drawings.y in which: Y

Fig. 1 is an axial section through a Well tubing Ashowing the improved construction,l the tubing bleederbeing closed.

Fig. 2 isa similar view showing .20 bleeder open. l

Fig is a 3 3 of Fig. 1.

In thedrawings a usual string' of Well tubing is shown asV comprising lengths of tubing 1 connected by coupling collars. A string of sucker rods reciprocates in the tubing andis adapted to operate standard deep-ivell pumping mechanism which includes plunger 2 having the usual Working valve 2 and connected tothe string of sucker rods for reciprocation in the usual Working barrel 1EL which depends from the string' of tubing. The'joints betvveen the sucker rods and the connection for the pump plunger are usual coupling collars adapted for threaded engagement with projecting pins on the sucker rods and on the pump plunger. y

i The coupling'eollar 8 between the pump plunger and the lotvermost sucker rod 4 is preferably locked, as for example by transverse Wedges 5 extending through the coupling collar" and the projecting-pins Which arethreaded into the same; and the lowermost sucker rod is held against turning in thewell tubingso that with the upper' end' of the string of sucker rods also held against turi'iing by its usual connection with a Walk ing beamV (not shown), unscrevving of any of the joints of thejsuclrer rod isprevented.v

ln order to hold the lowermost sucker rod a against turning in the tubing, it is noncircular in cross-section and reeiprocates through a corresponding axialbore in a memberwvhieh is entirely independent of the pump plunger and its Working barrel and is wedge in. tuning for use in the tubing transverse section on the line conjunction with standard pumping mechanism Without altering or replacing the latter'. The ivedgingfmember preferably vseats in a tapering bore 7 formed in one of the coupling collars between adjacent lengths' of the Well tubing. This coupling collar which is shown at 8 has the adjacent lengths of tubing threaded thereto With an intermediate portion of the internal'peripheral surface of the collar spacing the proximate ends of the connected lengths of tubing and forming the tapering bore .7 which convergently tapers downwardly to a somewhat smaller diameter than the internal diameter of the Well tubing. rlhe n-'edging member may comprise cooperating segments 9 and 10,*the meeting edges of Which are angularly disposed relative to its axis as shoivnat 11, so that lowering the segment 9 relative to segment-10, Will expand the segmental members and Wedge the same in tapering bore 7. To release the segmental members from Wedging engagement, segment 9 is elevated relative to segment 10, thereby contracting the parts7 due to the inclination of meeting edges 11. Y

l'ilhe means for elevating segment 9 comprises an extension thereofterminating in a plate -12avhich underliesthe segment 10 in spaced relation therefrom, so that Withdrawal ofthe string of sucker rods from the Well will cause vcoupling collar B'to impinge against the plate 12 and first elevate segment 9 relative to segment 10 in order to break the Wedging engagement in bore 7, and then elevate both segmentsof the ,vedging member by the abutment ofplate 12 against the segment 10.

In order to permit expansion and contraction of the Wedging member While preventing complete disengagement ofthe segments, the upper end of segment 9 preferably tapers upwardly to a somewhat restricted diameter as shown-at 15, and a closed yannulus 16 at the upper end of segment 10 is received over the tapering end ofthe cooperating segment.

, rlhe lowermost sucker rod t is shown as square in cross-section, and the axial bore 1S of the ivedging memberthrough which the sucker rod reciprocates, is similarly rectangular to permit free slidino of the sucker rod therethrough While preventing turning of the suclrer rod. The bore 18 is continued through the plate 12 and is transversely elongated in the directionfin which segments 9 and 10 eX- pand and contract, to permit said action of the segmental member without binding,there` on the sacher rodd- Ports 20 also open axially throuvh the segmental member to permit free fovv of oil when the member is wedged in bore 7.

The segmental member 9-10 is held against turning in the Well tubing by its Wedging engagement in bore 7, and the sucker rod 4 is held turning in the segmental member by its` reciprocation through bore 18. rl`1her vbore 7, may also iunction as a tubing bleeder.

F or this purpose a portk 25 opens through coupling 8 at the bore 7, and when the segmental member is wedged in the bore it closes the port as shown in Fig. 1. The port is opened to permit bleeding or' the tubing by lifting the string of sucker rods so that coupling 3 impinges against the plate 12, thereby releasing the Wedging engagement of the segmental member and then elevating the same as previously described and as shown in Fig. 2.

It will be apparent that the segmental Wedging member will prevent unscreiving of the sucler rods with or Without the additional feature oil the tubing bleeder formed by port 25; and that means other than the segmental construction 9 1() may be non-rotatably held in the tubing to prevent turning of the sucker rod and also open and'close the bleeder port when' the latter is included -in the construction.

Anti-friction means may be provided betiveenthe suclier rod 4 and the segmental members 910, and als an instance of this arrangement Iball-bearing 19 may be journaled in the Walls ofthe bore 18 so as to project into the bore and engage the reciprocating sucker rod.

- I claim:l Y

l. The combination of a string of sucker rods and a member comprising axial sections having abutting edges adapted to radially expand or contract the member by relative axial movement .between the sections, said member having a bore adapted to receive one of the sucker rods therethrough` and the bore and sucker rod having a cross-sectional shape vpreventing rotation while permitting reciprocation of the sucker rodrelative to the sectional member.

2. The combination of well tubing, a string of sucker-rods adapted to reciprocate in the tubing, and a split member adapted for wedging engagement in the tubing, said split niember having a bore adapted to receive one of the sucker rods therethrouglnand said bore and suche-r rod having a cross-sectional shape 4.' The combination of a string of Well tubing, a string of sucker rods adapted to recipe rocate in the Well tubing, a collar having an integral peripheral surface spacing proximate ends of connected lengths of the Well tubing and forming a. bore convergently tapering toward its lower end to adiameter less than the internal diameter of the Well-tubing, and a member vadapted ior axial Wedging en-l gagement in said tapering bore and adapted to engage one of the sucker rods so as to 'pre-A vent relative rotation While permitting' rela-l tive reciprocation of said sticker rod.

5. The combination of a string of Well tubing, a stringof sucker rods adapted to reciprocate in the well tubing, a collar having an integral peripheral surface spacing proxr mate ends of connected lengths lof the Well tubing and forming a bore convergentlytae pering toward its lower end to a diameter less than the internal diameter Lof the Wel-l tubing, and a member adapted for insertion or W-itltfV drawal through the string of Well tubing and adapted for axial Wedging engagement in said tapering bore, said member when wedged in the tapering bore being adapted1 to .engage one'of the sucker rods so as to prevent relative rotation While permitting relative reciprocation of said sucker rod. y

A6. The combination of a string of well tulv ing, a string of sucker rods connected by coupling collars and adapted to reciprocate in the well tubing, a collar having an integral peripheral surface spacing proximate ends .of connected lengths of the string of Well tubing and forming la bore convergently tapering toward its lower end to a diameter less than the internal diameter of the Well tubing, a member adapted for axial wedging engagement in said tapering bore, said Wedging member having a bore adapted to receive one of the sucker rods therethrough with said bore and sucker vrod of a corresponding crosssectional shape preventing rotation While permitting reciprocation of the 'sucker rod relative to the wedging member, and the Wedging engagement of the wedging member bein adapted for release by axial abutment of the Y sucker rod coupling collar which is below the Wedgingmember.

7. A combination of a string of Well tubing, a collar having an integral peri heral surface spacing proximate ends 0l connected lengths of the string of well tubing andformi-` reassess ing a bore convergently tapering toward its lower end to a diameter less than the internal diameter of the Well tubing, a member adapted for axial Wedging enga-gementin said tapering bore, a string of sucker rods adapted for reciprocation in the Well tubing and connected by coupling collars adapted for disengagement by relative turning of the sucker rods, a pump plunger, detachable means for connecting the lovvermost sucker rod totlie pump plunger, and means for positively locking said connection against disengagement, the said Wedging member having a bore and being so positioned in the string of Well tubing as to receive the loWermost sucker rod therethrough with said lowermost sucker rod and bore of a corresponding cross-sectional shape preventing rotation While permitting reeiprocation of the sucker rod relative to the Wedging member.

S. The combination of'a string of Well tubing, a string of sucker rods adaptedto reciprocate in the Well tubing, a collar having an integral peripheral surface spacing proximate ends of connected lengths of the Well tubing and forming a bore convergently tapering toward its lower end to adiameter less than the internal diameter of the Well tubing, a member adapted for axial Wedging engagement in said tapering bore and having a bore adapted to receive one of the sucker rods therethrough, and anti-friction means. between said sucker rod and the bore of the Wedging member, said bore of the Wedging member and the said sucker rod being of a corresponding cross-sectional shape preventing rotation While permitting reciprocationy oit the sucker rod relative to the Wedging member.

In testimony whereof he has aliixed his signature to this specilication.

GROVER C. BUSHONG. 

